#!/usr/bin/env node

const log = console.log, 
      usr = {
        name:'chen',
        age:21,
        qq:'2036177539@qq.com'
      };

log('name:\t%s',usr.name);
//log('age:\t\d',usr.age);
//log('age:\t' + usr.age);
log('age:\t%d',usr.age);
log('usr:\t%j',usr);

log('qq:'+usr.qq);
log(`qq:${usr.qq}`);

//log('name:\t%s\nage:\t%d\nusr:\t%j',usr.name,usr.age,usr);

console.error('something wrong!');

console.table(usr);
